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- Committer: Package Import Robot
- Author(s): Ryan Kavanagh
- Date: 2013-05-26 18:12:22 UTC
- mfrom: (33.1.2 experimental)
- Revision ID: package-import@ubuntu.com-20130526181222-67glcv7nppi4ih7r
Tags: 9.18-2
* Upload to unstable now that wheezy has been released
* Merge in patch from gregor herrman fixing a FTBFS due to POD errors
(Closes: #708026)
* Merge in patch from gregor herrman fixing a FTBFS due to POD errors
(Closes: #708026)
- files added:
- .pc/11_fix_lexgrog.diff/src
- .pc/11_fix_lexgrog.diff/src/perl
- .pc/13_section_mismatch.diff
- .pc/13_section_mismatch.diff/src
- .pc/14_pod_errors.diff
- .pc/14_pod_errors.diff/doc
- files removed:
- doc/rxvtperl.3.man.in
- libecb
- files modified:
- .pc/01_app-defaults.diff/src/rxvttoolkit.C
added
removed
src/rxvtimg.C
1
/*----------------------------------------------------------------------*
2
* File: rxvtimg.C
3
*----------------------------------------------------------------------*
4
*
5
* All portions of code are copyright by their respective author/s.
6
* Copyright (c) 2012 Marc Lehmann <schmorp@schmorp.de>
7
* Copyright (c) 2012 Emanuele Giaquinta <e.giaquinta@glauco.it>
8
*
9
* This program is free software; you can redistribute it and/or modify
10
* it under the terms of the GNU General Public License as published by
11
* the Free Software Foundation; either version 2 of the License, or
12
* (at your option) any later version.
13
*
14
* This program is distributed in the hope that it will be useful,
15
* but WITHOUT ANY WARRANTY; without even the implied warranty of
16
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17
* GNU General Public License for more details.
18
*
19
* You should have received a copy of the GNU General Public License
20
* along with this program; if not, write to the Free Software
21
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22
*---------------------------------------------------------------------*/
23
24
#include <string.h>
25
#include <math.h>
26
#include "../config.h"
27
#include "rxvt.h"
28
29
#if HAVE_IMG
30
31
typedef rxvt_img::nv nv;
32
33
namespace
34
{
35
struct mat3x3
36
{
37
nv v[3][3];
38
39
mat3x3 ()
40
{
41
}
42
43
mat3x3 (const nv *matrix)
44
{
45
memcpy (v, matrix, sizeof (v));
46
}
47
48
mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33)
49
{
50
v[0][0] = v11; v[0][1] = v12; v[0][2] = v13;
51
v[1][0] = v21; v[1][1] = v22; v[1][2] = v23;
52
v[2][0] = v31; v[2][1] = v32; v[2][2] = v33;
53
}
54
55
mat3x3 inverse ();
56
57
nv *operator [](int i) { return &v[i][0]; }
58
const nv *operator [](int i) const { return &v[i][0]; }
59
60
operator const nv * () const { return &v[0][0]; }
61
operator nv * () { return &v[0][0]; }
62
63
// quite inefficient, hopefully gcc pulls the w calc out of any loops
64
nv apply1 (int i, nv x, nv y)
65
{
66
mat3x3 &m = *this;
67
68
nv v = m[i][0] * x + m[i][1] * y + m[i][2];
69
nv w = m[2][0] * x + m[2][1] * y + m[2][2];
70
71
return v * (1. / w);
72
}
73
74
static mat3x3 translate (nv x, nv y);
75
static mat3x3 scale (nv s, nv t);
76
static mat3x3 rotate (nv phi);
77
};
78
79
mat3x3
80
mat3x3::inverse ()
81
{
82
mat3x3 &m = *this;
83
mat3x3 inv;
84
85
nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2];
86
nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1];
87
nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2];
88
89
nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2);
90
91
inv[0][0] = invdet * s0;
92
inv[0][1] = invdet * s1;
93
inv[0][2] = invdet * s2;
94
95
inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]);
96
inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]);
97
inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]);
98
99
inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]);
100
inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]);
101
inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]);
102
103
return inv;
104
}
105
106
static mat3x3
107
operator *(const mat3x3 &a, const mat3x3 &b)
108
{
109
mat3x3 r;
110
111
for (int i = 0; i < 3; ++i)
112
for (int j = 0; j < 3; ++j)
113
r[i][j] = a[i][0] * b[0][j]
114
+ a[i][1] * b[1][j]
115
+ a[i][2] * b[2][j];
116
117
return r;
118
}
119
120
mat3x3
121
mat3x3::translate (nv x, nv y)
122
{
123
return mat3x3 (
124
1, 0, x,
125
0, 1, y,
126
0, 0, 1
127
);
128
}
129
130
mat3x3
131
mat3x3::scale (nv s, nv t)
132
{
133
return mat3x3 (
134
s, 0, 0,
135
0, t, 0,
136
0, 0, 1
137
);
138
}
139
140
// clockwise
141
mat3x3
142
mat3x3::rotate (nv phi)
143
{
144
nv s = sin (phi);
145
nv c = cos (phi);
146
147
return mat3x3 (
148
c, -s, 0,
149
s, c, 0,
150
0, 0, 1
151
);
152
}
153
154
struct composer
155
{
156
rxvt_img *srcimg, *dstimg;
157
Picture src, dst, msk;
158
Display *dpy;
159
160
ecb_noinline
161
composer (rxvt_img *srcimg, rxvt_img *dstimg = 0)
162
: srcimg (srcimg), dstimg (dstimg), msk (0)
163
{
164
if (!this->dstimg)
165
this->dstimg = srcimg->new_empty ();
166
else if (!this->dstimg->pm) // somewhat unsatisfying
167
this->dstimg->alloc ();
168
169
dpy = srcimg->s->dpy;
170
src = srcimg->picture ();
171
dst = this->dstimg->picture ();
172
}
173
174
ecb_noinline
175
void mask (bool rgb = true, int w = 1, int h = 1)
176
{
177
Pixmap pixmap = XCreatePixmap (dpy, srcimg->pm, w, h, rgb ? 32 : 8);
178
179
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, rgb ? PictStandardARGB32 : PictStandardA8);
180
XRenderPictureAttributes pa;
181
pa.repeat = RepeatNormal;
182
pa.component_alpha = rgb;
183
msk = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa);
184
185
XFreePixmap (dpy, pixmap);
186
187
ecb_assume (msk);
188
}
189
190
// CreateSolidFill creates a very very very weird picture
191
void mask (const rgba &c)
192
{
193
XRenderColor rc = {
194
c.r * c.a / 65535,
195
c.g * c.a / 65535,
196
c.b * c.a / 65535,
197
c.a
198
};
199
msk = XRenderCreateSolidFill (dpy, &rc);
200
ecb_assume (msk);
201
}
202
203
void fill (const rgba &c)
204
{
205
XRenderColor rc = {
206
c.r * c.a / 65535,
207
c.g * c.a / 65535,
208
c.b * c.a / 65535,
209
c.a
210
};
211
212
XRenderFillRectangle (dpy, PictOpSrc, msk, &rc, 0, 0, 1, 1);
213
}
214
215
operator rxvt_img *()
216
{
217
return dstimg;
218
}
219
220
ecb_noinline
221
~composer ()
222
{
223
XRenderFreePicture (dpy, src);
224
XRenderFreePicture (dpy, dst);
225
if (msk) XRenderFreePicture (dpy, msk);
226
}
227
};
228
}
229
230
static XRenderPictFormat *
231
find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
232
{
233
if (format->direct.alphaMask)
234
return format; // already has alpha
235
236
// try to find a suitable alpha format, one bit alpha is enough for our purposes
237
if (format->type == PictTypeDirect)
238
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
239
if (f->direct.alphaMask
240
&& f->type == PictTypeDirect
241
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
242
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
243
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
244
return f;
245
246
// should be a very good fallback
247
return XRenderFindStandardFormat (dpy, PictStandardARGB32);
248
}
249
250
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat)
251
: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
252
pm(0), ref(0)
253
{
254
}
255
256
rxvt_img::rxvt_img (const rxvt_img &img)
257
: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref)
258
{
259
++ref->cnt;
260
}
261
262
rxvt_img *
263
rxvt_img::new_from_root (rxvt_screen *s)
264
{
265
Display *dpy = s->dpy;
266
unsigned int root_pm_w, root_pm_h;
267
Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_XROOTPMAP_ID]);
268
if (root_pixmap == None)
269
root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_ESETROOT_PMAP_ID]);
270
271
if (root_pixmap == None)
272
return 0;
273
274
Window wdummy;
275
int idummy;
276
unsigned int udummy;
277
278
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
279
return 0;
280
281
rxvt_img *img = new rxvt_img (
282
s,
283
XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
284
0,
285
0,
286
root_pm_w,
287
root_pm_h
288
);
289
290
img->pm = root_pixmap;
291
img->ref = new pixref (root_pm_w, root_pm_h);
292
img->ref->ours = false;
293
294
return img;
295
}
296
297
# if HAVE_PIXBUF
298
299
rxvt_img *
300
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb)
301
{
302
Display *dpy = s->dpy;
303
304
int width = gdk_pixbuf_get_width (pb);
305
int height = gdk_pixbuf_get_height (pb);
306
307
if (width > 32767 || height > 32767) // well, we *could* upload in chunks
308
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
309
310
// since we require rgb24/argb32 formats from xrender we assume
311
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
312
313
int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
314
315
XImage xi;
316
317
xi.width = width;
318
xi.height = height;
319
xi.xoffset = 0;
320
xi.format = ZPixmap;
321
xi.byte_order = ImageByteOrder (dpy);
322
xi.bitmap_unit = 0; //XY only, unused
323
xi.bitmap_bit_order = 0; //XY only, unused
324
xi.bitmap_pad = BitmapPad (dpy);
325
xi.depth = 32;
326
xi.bytes_per_line = 0;
327
xi.bits_per_pixel = 32; //Z only
328
xi.red_mask = 0x00000000; //Z only, unused
329
xi.green_mask = 0x00000000; //Z only, unused
330
xi.blue_mask = 0x00000000; //Z only, unused
331
xi.obdata = 0; // probably unused
332
333
bool byte_order_mismatch = byte_order != xi.byte_order;
334
335
if (!XInitImage (&xi))
336
rxvt_fatal ("unable to initialise ximage, please report.\n");
337
338
if (height > INT_MAX / xi.bytes_per_line)
339
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
340
341
xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line);
342
343
int rowstride = gdk_pixbuf_get_rowstride (pb);
344
bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
345
unsigned char *row = gdk_pixbuf_get_pixels (pb);
346
347
char *line = xi.data;
348
349
for (int y = 0; y < height; y++)
350
{
351
unsigned char *src = row;
352
uint32_t *dst = (uint32_t *)line;
353
354
for (int x = 0; x < width; x++)
355
{
356
uint8_t r = *src++;
357
uint8_t g = *src++;
358
uint8_t b = *src++;
359
uint8_t a = *src;
360
361
// this is done so it can be jump-free, but newer gcc's clone inner the loop
362
a = pb_has_alpha ? a : 255;
363
src += pb_has_alpha;
364
365
r = (r * a + 127) / 255;
366
g = (g * a + 127) / 255;
367
b = (b * a + 127) / 255;
368
369
uint32_t v = (a << 24) | (r << 16) | (g << 8) | b;
370
371
if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
372
v = ecb_bswap32 (v);
373
374
*dst++ = v;
375
}
376
377
row += rowstride;
378
line += xi.bytes_per_line;
379
}
380
381
rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
382
img->alloc ();
383
384
GC gc = XCreateGC (dpy, img->pm, 0, 0);
385
XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
386
XFreeGC (dpy, gc);
387
388
free (xi.data);
389
390
return img;
391
}
392
393
rxvt_img *
394
rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
395
{
396
GError *err = 0;
397
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
398
399
if (!pb)
400
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
401
402
rxvt_img *img = new_from_pixbuf (s, pb);
403
404
g_object_unref (pb);
405
406
return img;
407
}
408
409
# endif
410
411
void
412
rxvt_img::destroy ()
413
{
414
if (--ref->cnt)
415
return;
416
417
if (pm && ref->ours)
418
XFreePixmap (s->dpy, pm);
419
420
delete ref;
421
}
422
423
rxvt_img::~rxvt_img ()
424
{
425
destroy ();
426
}
427
428
void
429
rxvt_img::alloc ()
430
{
431
pm = XCreatePixmap (s->dpy, s->display->root, w, h, format->depth);
432
ref = new pixref (w, h);
433
}
434
435
rxvt_img *
436
rxvt_img::new_empty ()
437
{
438
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
439
img->alloc ();
440
441
return img;
442
}
443
444
Picture
445
rxvt_img::picture ()
446
{
447
Display *dpy = s->dpy;
448
449
XRenderPictureAttributes pa;
450
pa.repeat = repeat;
451
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
452
453
return pic;
454
}
455
456
void
457
rxvt_img::unshare ()
458
{
459
if (ref->cnt == 1 && ref->ours)
460
return;
461
462
Pixmap pm2 = XCreatePixmap (s->dpy, s->display->root, ref->w, ref->h, format->depth);
463
GC gc = XCreateGC (s->dpy, pm, 0, 0);
464
XCopyArea (s->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
465
XFreeGC (s->dpy, gc);
466
467
destroy ();
468
469
pm = pm2;
470
ref = new pixref (ref->w, ref->h);
471
}
472
473
void
474
rxvt_img::fill (const rgba &c, int x, int y, int w, int h)
475
{
476
XRenderColor rc = { c.r, c.g, c.b, c.a };
477
478
Display *dpy = s->dpy;
479
Picture src = picture ();
480
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, x, y, w, h);
481
XRenderFreePicture (dpy, src);
482
}
483
484
void
485
rxvt_img::fill (const rgba &c)
486
{
487
fill (c, 0, 0, w, h);
488
}
489
490
void
491
rxvt_img::add_alpha ()
492
{
493
if (format->direct.alphaMask)
494
return;
495
496
composer cc (this, new rxvt_img (s, find_alpha_format_for (s->dpy, format), x, y, w, h, repeat));
497
498
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
499
500
rxvt_img *img = cc;
501
502
::swap (img->ref, ref);
503
::swap (img->pm , pm );
504
505
delete img;
506
}
507
508
static void
509
get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params)
510
{
511
nv sigma = radius / 2.0;
512
nv scale = sqrt (2.0 * M_PI) * sigma;
513
nv sum = 0.0;
514
515
for (int i = 0; i < width; i++)
516
{
517
nv x = i - width / 2;
518
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
519
sum += kernel[i];
520
}
521
522
params[0] = XDoubleToFixed (width);
523
params[1] = XDoubleToFixed (1);
524
525
for (int i = 0; i < width; i++)
526
params[i+2] = XDoubleToFixed (kernel[i] / sum);
527
}
528
529
rxvt_img *
530
rxvt_img::blur (int rh, int rv)
531
{
532
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
533
return clone ();
534
535
Display *dpy = s->dpy;
536
int size = max (rh, rv) * 2 + 1;
537
nv *kernel = (nv *)malloc (size * sizeof (nv));
538
XFixed *params = rxvt_temp_buf<XFixed> (size + 2);
539
rxvt_img *img = new_empty ();
540
541
XRenderPictureAttributes pa;
542
pa.repeat = RepeatPad;
543
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
544
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
545
546
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
547
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
548
XFreePixmap (dpy, tmp_pm);
549
550
if (kernel && params)
551
{
552
size = rh * 2 + 1;
553
get_gaussian_kernel (rh, size, kernel, params);
554
555
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
556
XRenderComposite (dpy,
557
PictOpSrc,
558
src,
559
None,
560
tmp,
561
0, 0,
562
0, 0,
563
0, 0,
564
w, h);
565
566
size = rv * 2 + 1;
567
get_gaussian_kernel (rv, size, kernel, params);
568
::swap (params[0], params[1]);
569
570
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
571
XRenderComposite (dpy,
572
PictOpSrc,
573
tmp,
574
None,
575
dst,
576
0, 0,
577
0, 0,
578
0, 0,
579
w, h);
580
}
581
582
free (kernel);
583
584
XRenderFreePicture (dpy, src);
585
XRenderFreePicture (dpy, dst);
586
XRenderFreePicture (dpy, tmp);
587
588
return img;
589
}
590
591
rxvt_img *
592
rxvt_img::muladd (nv mul, nv add)
593
{
594
// STEP 1: double the image width, fill all odd columns with white (==1)
595
596
composer cc (this, new rxvt_img (s, format, 0, 0, w * 2, h, repeat));
597
598
// why the hell does XRenderSetPictureTransform want a writable matrix :(
599
// that keeps us from just static const'ing this matrix.
600
XTransform h_double = {
601
0x08000, 0, 0,
602
0, 0x10000, 0,
603
0, 0, 0x10000
604
};
605
606
XRenderSetPictureFilter (cc.dpy, cc.src, "nearest", 0, 0);
607
XRenderSetPictureTransform (cc.dpy, cc.src, &h_double);
608
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
609
610
cc.mask (false, 2, 1);
611
612
static const XRenderColor c0 = { 0, 0, 0, 0 };
613
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c0, 0, 0, 1, 1);
614
static const XRenderColor c1 = { 65535, 65535, 65535, 65535 };
615
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c1, 1, 0, 1, 1);
616
617
Picture white = XRenderCreateSolidFill (cc.dpy, &c1);
618
619
XRenderComposite (cc.dpy, PictOpOver, white, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
620
621
XRenderFreePicture (cc.dpy, white);
622
623
// STEP 2: convolve the image with a 3x1 filter
624
// a 2x1 filter would obviously suffice, but given the total lack of specification
625
// for xrender, I expect different xrender implementations to randomly diverge.
626
// we also halve the image, and hope for the best (again, for lack of specs).
627
composer cc2 (cc.dstimg);
628
629
XFixed kernel [] = {
630
XDoubleToFixed (3), XDoubleToFixed (1),
631
XDoubleToFixed (0), XDoubleToFixed (mul), XDoubleToFixed (add)
632
};
633
634
XTransform h_halve = {
635
0x20000, 0, 0,
636
0, 0x10000, 0,
637
0, 0, 0x10000
638
};
639
640
XRenderSetPictureFilter (cc.dpy, cc2.src, "nearest", 0, 0);
641
XRenderSetPictureTransform (cc.dpy, cc2.src, &h_halve);
642
XRenderSetPictureFilter (cc.dpy, cc2.src, FilterConvolution, kernel, ecb_array_length (kernel));
643
644
XRenderComposite (cc.dpy, PictOpSrc, cc2.src, None, cc2.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
645
646
return cc2;
647
}
648
649
ecb_noinline static void
650
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
651
{
652
int32_t x = clamp (c, cl0, cl1);
653
c -= x;
654
xc = x;
655
}
656
657
ecb_noinline static bool
658
extract (int32_t cl0, int32_t cl1, int32_t &r, int32_t &g, int32_t &b, int32_t &a, unsigned short &xr, unsigned short &xg, unsigned short &xb, unsigned short &xa)
659
{
660
extract (cl0, cl1, r, xr);
661
extract (cl0, cl1, g, xg);
662
extract (cl0, cl1, b, xb);
663
extract (cl0, cl1, a, xa);
664
665
return xr | xg | xb | xa;
666
}
667
668
void
669
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
670
{
671
unshare ();
672
673
Display *dpy = s->dpy;
674
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
675
676
// loop should not be needed for brightness, as only -1..1 makes sense
677
//while (r | g | b | a)
678
{
679
unsigned short xr, xg, xb, xa;
680
XRenderColor mask_c;
681
682
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
683
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
684
685
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
686
{
687
XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
688
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
689
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
690
mask_c.green = -mask_c.green;
691
mask_c.blue = -mask_c.blue;
692
mask_c.alpha = -mask_c.alpha;
693
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
694
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
695
}
696
}
697
698
XRenderFreePicture (dpy, dst);
699
}
700
701
void
702
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
703
{
704
if (r < 0 || g < 0 || b < 0 || a < 0)
705
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
706
707
// premultiply (yeah, these are not exact, sue me or fix it)
708
r = (r * (a >> 8)) >> 8;
709
g = (g * (a >> 8)) >> 8;
710
b = (b * (a >> 8)) >> 8;
711
712
composer cc (this);
713
rxvt_img *img = cc;
714
img->fill (rgba (0, 0, 0, 0));
715
716
cc.mask (true);
717
718
//TODO: this operator does not yet implement some useful contrast
719
while (r | g | b | a)
720
{
721
unsigned short xr, xg, xb, xa;
722
XRenderColor mask_c;
723
724
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
725
{
726
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
727
XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
728
}
729
}
730
731
::swap (img->ref, ref);
732
::swap (img->pm , pm );
733
734
delete img;
735
}
736
737
void
738
rxvt_img::draw (rxvt_img *img, int op, nv mask)
739
{
740
unshare ();
741
742
composer cc (img, this);
743
744
if (mask != 1.)
745
cc.mask (rgba (0, 0, 0, float_to_component (mask)));
746
747
XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
748
}
749
750
rxvt_img *
751
rxvt_img::clone ()
752
{
753
return new rxvt_img (*this);
754
}
755
756
rxvt_img *
757
rxvt_img::reify ()
758
{
759
if (x == 0 && y == 0 && w == ref->w && h == ref->h)
760
return clone ();
761
762
// add an alpha channel if...
763
bool alpha = !format->direct.alphaMask // pixmap has none yet
764
&& (x || y) // we need one because of non-zero offset
765
&& repeat == RepeatNone; // and we have no good pixels to fill with
766
767
composer cc (this, new rxvt_img (s, alpha ? find_alpha_format_for (s->dpy, format) : format,
768
0, 0, w, h, repeat));
769
770
if (repeat == RepeatNone)
771
{
772
XRenderColor rc = { 0, 0, 0, 0 };
773
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
774
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
775
}
776
else
777
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
778
779
return cc;
780
}
781
782
rxvt_img *
783
rxvt_img::sub_rect (int x, int y, int width, int height)
784
{
785
rxvt_img *img = clone ();
786
787
img->x -= x;
788
img->y -= y;
789
790
if (w != width || h != height)
791
{
792
img->w = width;
793
img->h = height;
794
795
rxvt_img *img2 = img->reify ();
796
delete img;
797
img = img2;
798
}
799
800
return img;
801
}
802
803
rxvt_img *
804
rxvt_img::transform (const nv matrix[3][3])
805
{
806
return transform (mat3x3 (&matrix[0][0]));
807
}
808
809
rxvt_img *
810
rxvt_img::transform (const nv *matrix)
811
{
812
mat3x3 m (matrix);
813
814
// calculate new pixel bounding box coordinates
815
nv rmin[2], rmax[2];
816
817
for (int i = 0; i < 2; ++i)
818
{
819
nv v;
820
821
v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
822
v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
823
v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
824
v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
825
}
826
827
float sx = rmin [0] - x;
828
float sy = rmin [1] - y;
829
830
// TODO: adjust matrix for subpixel accuracy
831
int nx = floor (rmin [0]);
832
int ny = floor (rmin [1]);
833
834
int new_width = ceil (rmax [0] - rmin [0]);
835
int new_height = ceil (rmax [1] - rmin [1]);
836
837
mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
838
839
composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat));
840
841
XTransform xfrm;
842
843
for (int i = 0; i < 3; ++i)
844
for (int j = 0; j < 3; ++j)
845
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
846
847
XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
848
XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
849
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
850
851
return cc;
852
}
853
854
rxvt_img *
855
rxvt_img::scale (int new_width, int new_height)
856
{
857
if (w == new_width && h == new_height)
858
return clone ();
859
860
int old_repeat_mode = repeat;
861
repeat = RepeatPad; // not right, but xrender can't properly scale it seems
862
863
rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
864
865
repeat = old_repeat_mode;
866
img->repeat = repeat;
867
868
return img;
869
}
870
871
rxvt_img *
872
rxvt_img::rotate (int cx, int cy, nv phi)
873
{
874
move (-cx, -cy);
875
rxvt_img *img = transform (mat3x3::rotate (phi));
876
move ( cx, cy);
877
img->move (cx, cy);
878
879
return img;
880
}
881
882
rxvt_img *
883
rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
884
{
885
if (new_format == format)
886
return clone ();
887
888
composer cc (this, new rxvt_img (s, new_format, x, y, w, h, repeat));
889
890
int op = PictOpSrc;
891
892
if (format->direct.alphaMask && !new_format->direct.alphaMask)
893
{
894
// does it have to be that complicated
895
XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
896
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);
897
898
op = PictOpOver;
899
}
900
901
XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
902
903
return cc;
904
}
905
906
rxvt_img *
907
rxvt_img::tint (const rgba &c)
908
{
909
composer cc (this);
910
cc.mask (true);
911
cc.fill (c);
912
913
XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
914
915
return cc;
916
}
917
918
rxvt_img *
919
rxvt_img::shade (nv factor, rgba c)
920
{
921
clamp_it (factor, -1., 1.);
922
factor++;
923
924
if (factor > 1)
925
{
926
c.r = c.r * (2 - factor);
927
c.g = c.g * (2 - factor);
928
c.b = c.b * (2 - factor);
929
}
930
else
931
{
932
c.r = c.r * factor;
933
c.g = c.g * factor;
934
c.b = c.b * factor;
935
}
936
937
rxvt_img *img = this->tint (c);
938
939
if (factor > 1)
940
{
941
c.a = 0xffff;
942
c.r =
943
c.g =
944
c.b = 0xffff * (factor - 1);
945
946
img->brightness (c.r, c.g, c.b, c.a);
947
}
948
949
return img;
950
}
951
952
rxvt_img *
953
rxvt_img::filter (const char *name, int nparams, nv *params)
954
{
955
composer cc (this);
956
957
XFixed *xparams = rxvt_temp_buf<XFixed> (nparams);
958
959
for (int i = 0; i < nparams; ++i)
960
xparams [i] = XDoubleToFixed (params [i]);
961
962
XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams);
963
964
XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
965
966
return cc;
967
}
968
969
#endif
970
Loggerhead is a web-based interface for Breezy
Version: 2.0.1